oil dipstick TOYOTA HIGHLANDER 2001 Service Repair Manual

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Keep the back door closed while
driving. An open or unsealed back
door may cause exhaust gases to
be drawn into the vehicle.

To allow proper operation of your
vehicle's ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.

If you smell exhaust fumes in the
vehicle, drive with the windows
open and the back door closed.
Have the cause immediately located
and corrected.
FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of
lubricating and cooling the inside of the
engine, and plays a major role in main-
taining the engine in proper working order.
ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are as
follows.

Oil is used to lubricate pistons, piston
rings and cylinders. A thin film of oil
is left on the cylinder wall when a pis-
ton moves downwards in the cylinder.
High negative pressure generated when
the vehicle is decelerating sucks some
of this oil into the combustion chamber.
This oil as well as some part of the oil
film left on the cylinder wall is burned
by the high temperature combustion
gases during the combustion process.

Oil is also used to lubricate the stems
of the intake valves. Some of this oil
is sucked into the combustion chamber
together with the intake air and is
burned along with the fuel. High tem-
perature exhaust gases also burn the
oil used to lubricate the exhaust valve
stems.The amount of engine oil consumed de-
pends on the viscosity of the oil, the
quality of the oil and the conditions the
vehicle is driven under.
More oil is consumed by high- speed driv-
ing and frequent acceleration and decel-
eration.
A new engine consumes more oil, since
its pistons, piston rings and cylinder walls
have not become conditioned.
Oil consumption: Max. 1.0 L per 1000
km (1.1 qt./600 miles, 0.9 Imp. qt./600
miles)
When judging the amount of oil con-
sumption, note that the oil may become
diluted and make it difficult to judge
the true level accurately.
As an example, if a vehicle is used for
repeated short trips, and consumes a nor-
mal amount of oil, the dipstick may not
show any drop in the oil level at all, even
after 1000 km (600 miles) or more. This
is because the oil is gradually becoming
diluted with fuel or moisture, making it
appear that the oil level has not changed.
The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an expressway, making it
appear that oil is excessively consumed
after driving at high speeds.
Facts about engine oil
consumption

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If you are a skilled do- it- yourself mechan-
ic, the Toyota service manuals are recom-
mended. Please be aware that do- it- your-
self maintenance can affect your warranty
coverage. See Owner 's Warranty Informa-
tion Bookletº or Owner 's Manual Supple-
mentº for the details.Listed below are the general maintenance
items that should be performed as fre-
quently as specified. In addition to check-
ing the items listed, if you notice any
unusual noise, smell or vibration, you
should investigate the cause or take your
vehicle to your Toyota dealer or a quali-
fied service shop immediately. It is recom-
mended that any problem you notice be
brought to the attention of your dealer or
the qualified service shop for their advice.
CAUTION
Make these checks only with ade-
quate ventilation if you run the en-
gine.
IN THE ENGINE COMPARTMENT
Items listed below should be checked
from time to time, e.g. each time when
refueling.
Washer fluid
Make sure there is sufficient fluid in the
tank. See page 399 in Section 7- 3 for
additional information.Engine coolant level
Make sure the coolant level is between
the Fº and Lº lines on the see- through
reservoir when the engine is cold. See
page 383 in Section 7- 2 for additional
information.
Radiator, condenser and hoses
Check that the front of the radiator and
condenser are clean and not blocked with
leaves, dirt or insects. See page 384 in
Section 7- 2 for additional information.
Battery electrolyte level
Your Toyota has a maintenance free bat-
tery. You do not have to add distilled wa-
ter. For longer life of the battery, however,
see page 396 for additional information.
Brake fluid level
Make sure the brake fluid level is correct.
See page 384 in Section 7- 2 for addition-
al information.
Engine oil level
Check the level on the dipstick with the
engine turned off and the vehicle parked
on a level spot. See page 380 in Section
7- 2 for additional information.
General maintenance

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The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.
NOTICE
Do not continue driving if the engine
drive belt is broken or loose.
(e) Low Engine Oil Pressure Warning
Light
This light warns that the engine oil pres-
sure is too low.
If it flickers or stays on while you are
driving, pull off the road to a safe place
and stop the engine immediately. Call a
Toyota dealer or qualified repair shop for
assistance.
The light may occasionally flicker when
the engine is idling or it may come on
briefly after a hard stop. There is no
cause for concern if it then goes out when
the engine is accelerated slightly.
The light may come on when the oil level
is extremely low. It is not designed to
indicate low oil level, and the oil level
must be checked using the level dipstick.
NOTICE
Do not drive the vehicle with the
warning light onÐeven for one block.
It may ruin the engine.
(f) Malfunction Indicator Lamp
This lamp comes on when the ignition
key is turned to the ONº position and
goes off after the engine starts. This
means that the warning light system is
operating properly.
If the lamp remains on, or the lamp
comes on while driving, first check the
followings.

Empty fuel tank
If the fuel tank is empty, refuel immedi-
ately.

Loose fuel tank cap
If the fuel tank cap is loose, securely
tighten it.
These cases are temporary malfunctions.
The malfunction indicator lamp will go off
after taking several driving trips.
If the lamp does not go off even after
several trips, contact your Toyota dealer
as soon as possible.If the fuel tank is not empty or the fuel
tank cap is not loose...

There is a problem somewhere in the
engine, emission control system, elec-
tronic throttle control system, automatic
transmission electrical system or warn-
ing light system itself.
In this case, slow down and have your
vehicle checked/repaired by your Toyota
dealer as soon as possible.
If engine speed does not increase when
the accelerator pedal is depressed, there
may be a problem somewhere in the elec-
tronic throttle control system.
At this time, vibration may occur. Howev-
er, if you depress the accelerator pedal
more firmly and slowly, you can drive your
vehicle at low speeds. Have your vehicle
checked by your Toyota dealer as soon as
possible.
Even if the abnormality of the electronic
throttle control system is corrected during
low speed driving, the system may not be
recovered until the engine is stopped and
the ignition key is turned to ACCº or
LOCKº position.

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1. Engine coolant reservoir
2. Power steering fluid reservoir
3. Engine oil filler cap
4. Engine oil level dipstick
5. Fuse blocks
6. Brake fluid reservoir
7. Battery
8. Radiator
9. Condenser
10. Electric cooling fans
11. Windshield and rear window washer
fluid tank
Engine compartment overview

2AZ- FE engine

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1. Engine coolant reservoir
2. Power steering fluid reservoir
3. Engine oil level dipstick
4. Engine oil filler cap
5. Fuse blocks
6. Brake fluid reservoir
7. Battery
8. Radiator
9. Condenser
10. Electric cooling fans
11. Windshield and rear window washer
fluid tank
3MZ- FE engine

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Low level Full level
Add oil O.K. Too full
2AZ- FE engine
Low level Full level
Add oil O.K. Too full
3MZ- FE engine
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.
1. To get a correct reading, the vehicle
should be on level ground. After turning
off the engine, wait a few minutes for
the oil to drain back into the bottom of
the engine.
2. Pull the dipstick out, hold a rag under
the end and wipe it clean.
3. Reinsert the dipstickÐpush it in as far
as it will go, or the reading will not be
correct.
4. Pull the dipstick out and look at the oil
level while holding a rag under the
end.
CAUTION
Be careful not to touch the hot ex-
haust manifold.
NOTICE

Be careful not to drop engine oil on
the vehicle components.

To avoid drops of the engine oil
falling when you pull out the engine
oil dipstick, make sure to hold a
rag under the dipstick.
If the oil level is below or only slightly
above the low level, add engine oil of
the same type as already in the engine.
Remove the oil filler cap and add engine
oil in small quantities at a time, checking
the dipstick. We recommend that you use
a funnel when adding oil.
The approximate quantity of oil needed to
raise the level between low and full on the
dipstick is indicated below for reference.
When the level reaches within the correct
range, install the filler cap hand- tight.
Oil quantity, L (qt., lmp. qt.):
2AZ- FE engine 1.0 (1.1, 0.9)
3MZ- FE engine 1.5 (1.6, 1.3)
Checking the engine oil level

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NOTICE

Be careful not to spill engine oil on
the vehicle components.

Avoid overfilling, or the engine
could be damaged.

Check the oil level on the dipstick
once again after adding the oil.
ENGINE OIL SELECTION
Toyota Genuine Motor Oilº is used in
your Toyota vehicle. Use Toyota approved
Toyota Genuine Motor Oilº or equivalent
to satisfy the following grade and
viscosity.
Oil grade:
API grade SL Energy- Conservingº or
ILSAC multigrade engine oil
Recommended viscosity:
SAE 5W- 30
Outside temperature
SAE 5W- 30 is the best choice for good
fuel economy and good starting in cold
weather.
If SAE 5W- 30 is not available, SAE
10W- 30 may be used. However, it
should be replaced with SAE 5W- 30 at
the next oil change.

9900X-21
99-4
- MAINTENANCEUNDER HOOD
3784 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
UNDER HOOD
GENERAL MAINTENANCE
1. GENERAL NOTES

Maintenance items may vary from country to country. Check the owner's manual supplement in which
the maintenance schedule is shown.

Every service item in the periodic maintenance schedule must be performed.

Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).

Maintenance service after the last period should be performed at the same interval as before unless
noted.

Failure to do even one of the items can cause the engine to run poorly and/or increase the exhaust
emissions.
2. WINDSHIELD WASHER FLUID
(a) Check that there is sufficient fluid in the tank.
3. ENGINE COOLANT LEVEL
(a) Check that the coolant level is between the LEVEL lines on the see-through reservoir at normal tem-
perature (20°C (68°F)).
4. RADIATOR AND HOSES
(a) Check that the front of the radiator is clean and not blocked by leaves, dirt or bugs.
(b) Check the hoses for cracks, kinks, rot or loose connections.
5. BATTERY ELECTROLYTE LEVEL
(a) Check the indicator.
(b) Check that the electrolyte level of all the battery cells is between the upper and lower level lines on
the case.
6. BRAKE FLUID LEVEL
(a) Check that the brake fluid levels are near the upper level line on the see-through reservoirs.
7. ENGINE DRIVE BELT
(a) Check the drive belt for fraying, cracks, wear or oiliness.
8. ENGINE OIL LEVEL
(a) Check the level on the dipstick with the engine turned off.
9. POWER STEERING FLUID LEVEL
(a) Check the level on the dipstick.
(b) The level should be in the ºHOTº or ºCOLDº range depending on the fluid temperature.
10. AUTOMATIC TRANSMISSION FLUID LEVEL
(a) Park the vehicle on a level surface.
(b) With the engine idling and the parking brake applied, shift the selector into all the positions from ºPº
to ºLº, and then shift into the ºPº position.
(c) Pull out the dipstick and wipe off the fluid with a clean shop rag. Re-insert the dipstick and check that
the fluid level is in the ºHOTº range.
(d) Perform this check with the fluid at the normal driving temperature (70 to 80°C, 158 to 176°F).
HINT:
Wait until the engine cools down (approx. 30 min.) before checking the fluid level after extended driving at
high speed, in hot weather, in heavy traffic or after pulling a trailer.
11. EXHAUST SYSTEM
(a) Visually inspect for cracks, holes or loose supports.
If any change in the sound of the exhaust or the smell of the exhaust fumes is noticed, locate and correct
the cause.